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首页> 外文期刊>Plant Biosystems >Oven-dried mosses as tools for trace element detection in polluted waters: a preliminary study under laboratory conditions.
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Oven-dried mosses as tools for trace element detection in polluted waters: a preliminary study under laboratory conditions.

机译：烤箱干燥的苔藓作为污水中微量元素检测的工具：在实验室条件下的初步研究。

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摘要

The concentration of 11 trace elements, plus Ca, Mg, Na and K was measured in moss bags of living and dead (oven-dried at 105 degrees C) Platyhypnidium riparioides after a 1-week exposure to tap water, and to 0.21, 1.0, 2.5 and 4.0 micro M solutions under laboratory conditions, with the aim of (1) observing the accumulation curves and (2) performing a statistical comparison in element concentrations. Uptake occurred both in living and in dead mosses following similar patterns in the two materials: a linear uptake was observed for Cd and Ni, a saturation curve for As, Cu, Hg and Pb, an unclear trend for Al and Mn and a trend leading to a maximum for Cr and Fe. An evident efflux of K indicated alterations in cell membrane permeability in living mosses and cellular damage in dead mosses. Living mosses accumulated higher concentrations of Cr (+4/+49%) and Mn (+124/+216%), while dead mosses accumulated higher concentrations of Cd (+13/+50%), Cu (+26/+51%), Ni (+22/+139%) and Zn (+22/+63%). Dead mosses maintained a considerable uptake efficiency for several trace elements, and sometimes even increased it as compared with living mosses, thus proving to be suitable for standard kits.
机译：在生死的苔藓袋中（在105摄氏度下烘箱烘干） riptyhypnidium riparioides 中，测量了11种微量元素以及Ca，Mg，Na和K的浓度水，并在实验室条件下至0.21、1.0、2.5和4.0 micro M溶液，目的是（1）观察累积曲线和（2）对元素浓度进行统计比较。两种材料中的生苔和死苔都以相似的方式发生吸收：镉和镍呈线性吸收，砷，铜，汞和铅的饱和曲线，铝和锰的趋势不清楚，并且趋势领先铬和铁的最大值。钾的明显流出表明活苔藓细胞膜通透性的改变和死苔藓细胞的损伤。活苔藓积累了较高浓度的Cr（+ 4 / + 49％）和Mn（+ 124 / + 216％），而死苔藓积累了较高的Cd（+ 13 / + 50％），Cu（+ 26 / + 51 ％），Ni（+ 22 / + 139％）和Zn（+ 22 / + 63％）。死苔藓对几种微量元素保持了相当高的吸收效率，与活苔藓相比有时甚至提高了吸收效率，因此被证明适用于标准试剂盒。

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